ppt format in 26 slide

Some common NMR experiments:

2D COSY — Homonuclear Shift COrrelation SpectroscopY

2D Gradient COSY-45

2D DQF－COSY(Double-Quantum Filtered COSY)

2D Gradient DQF-COSY

2D Gradient TOCSY, mixing time=50ms

DEPT: Distortionless Enhancement by Polarization Transfer

HETCOR (Heteronuclear chemical shift correlation, 1H - 13C COSY)

HSQC (Heteronuclear Single Quantum Coherence)

HMQC (Heteronuclear Multiple Quantum Coherence)

HSQC spectrum: H-C correlated

HSQC-TOCSY

Gradient HSQC-TOCSY(mixing time=20ms)

Gradient HSQC-TOCSY(mixing time=80ms)

HMBC (Heteronuclear Multiple-Bond Correlation Spectroscopy)

Gradient HMBC

2D NOESY (Nuclear Overhauser Enhancements SpectroscopY)

Gradient NOESY

2D ROESY pulse program

Structure Determination Procedures

Applications:

• Sample quality control for Synthetic works.

• Elucidation of chemical structures.

• Getting functional group, bonding, dynamics, kinetics and chemical exchange information of molecules.

• 3D structures of the molecules.

Homonuclear： 1D、2D 1H-1H COSY, DQF-COSY, TOCSY

usage：spin system assignment

Heteronuclear：

Direct (detect 13C): APT, DEPT, HETCOR

Inverse (detect1H): HMQC, HSQC, HMBC, HSQC-COSY,

HSQC-TOCSY, HMQC-TOCSY

usage：assigning heteronuclei、connecting spin systems

1D、2D NOESY，ROESY, HOESY(HSQC-NOESY)

usage： connecting spin systems 、structure determination

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